Monthly Archives: September 2020

Insertion Type Ultrasonic Flow Meter TUF2000

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Insertion Type Ultrasonic Flow Meter

What is Insertion Type Ultrasonic Flow Meter? Insertion Type Ultrasonic Flow Meter works on the principle of time difference. The transducers are inserted into the surface of the closed pipe.

The insertion type ultrasonic flowmeter is composed of a flowmeter host, a pair of insertion transducers and their accessories.

Insertion Type Ultrasonic Flow Mete can be a replacement for electromagnetic flowmeter on large diameter water flow pipes.

Get a Quote More Ultrasonic Flow Meters for Liquids

Features Of Insertion Type Ultrasonic Flow Meter

Insertion Type Ultrasonic Flow Meter is a type of ultrasonic flow. The same is the principle of using the time difference method. The form of the transducer has been changed, and the installation method has been changed to the insertion type. The debugging process and use effect are not much different from the clamp-on ultrasonic flowmeter.

Today we mainly introduce the advantages of Insertion Type Ultrasonic Flow Meter! It is divided into the following points:

  1. It can be installed online under pressure. During construction, the production pipeline does not need to be shut down, and there is no need to disconnect the pipe welding flange. Save the time and expense of using the unit;
  2. The product has low power consumption. The power supply is DC24V, and the power is 5W. It is safer to measure tap water, river water, sea water, etc.;
  3. The protection level of the converter is IP65. No screw design on the surface. The appearance is high-end and atmospheric. The service life of the button panel is more than 200,000 times;
  4. Sensor protection grade IP68. Can be immersed in water to work;
  5. 4~20mA current output. RS485 communication, standard MODBUS protocol. It can form a network by itself or connect to a GPRS module to realize remote data transmission;
  6. Independent menu operation, LCD backlight display. Data reading is clear at a glance;
  7. Daily, monthly and annual traffic accumulation functions;

Specifications of Insertion Type Ultrasonic Flow Meter

Item Performance and Parameter
Convertor Principle transit-time ultrasonic flowmeter
Accuracy Flow: over 1%-2%(battery-powered supply over ±2% )，Heat: over ±2%，Repeatability: over 0.2%
Display 2×20 character LCD with backlight, support the language of Chinese, English and Italy Convertor dimension:170*180*56cm
Operation Support 16 key light touch keyboard and the Simulation keyboard software
Signal Output 1 way 4~ 20mA output, electric resistance 0~ 1K，accuracy0. 1%
1 way OCT pulse output( Pulse width 6 ~ 1 0 0 0 ms，default is 2 0 0 ms)
1 way Relay output
Signal Input 3 way 4~ 20mA input, accuracy 0. 1%，acquisition signal such as temperature, press and liquid level
Connect the temperature transducer Pt100, can finish the heat/energy measurement
Data interface Insulate RS485 serial interface, upgrade the flow meter software by computer, support the MODBUS, METER-BUS etc.
Other Function Automatically remember the previous flow/energy data of 512 days,  128 months and 10 years
Automatically remember the previous flow/energy data of 512 days working condition and check it
Automatically remember the previous 32 times power on/off time and flow rate
Special Cable Twisted-pair cable, generally, the length under 50 meters; Select the RS485 communication. The transmission distance can over 1000m.
Pipe Condition Pipe Material Steel, Stainless steel, Cast iron, Copper, Cement pipe, PVC, Aluminum, Glass steel product, liner is allowed.
Pipe Diameter 32mm—6000mm
Straight length pipe Transducer installation should be satisfied: upstream10D, downstream 5D, 30D from the pump.
Measuring Medium Type of Liquid Water (hot water, chilled water, city water, sea water, waste water, etc.);  Sewage with small particle content; Oil (crude oil, lubricating oil, diesel oil, fuel oil, etc.);  Chemicals (alcohol, acids, etc.); Plant effluent; Beverage, liquid food; Ultra-pure liquids; Solvents and other liquids
Temperature Standard Transducer: -30–90℃; High-temperature transducer: -30–160℃
Turbidity No more than 10000ppm and less bubble
Flow rate 0–±12 m/s
Working Environment Temperature Main Unit: -20–60℃
Flow transducer: -40–160℃; 
Temperature transducer: according to the customer’s demands.
Humidity Main Unit: 85% RH; Flow Transducer: Ip67
Power Supply DC  24V or AC  85-264V
Power Consumption 1.5W

Read more about: What Is GPM In Flow Meter?

Optional Host

According to different installation condition, there are many models separated ultrasonic flowmeter for selection:

TUF-2000B Wall-mount-plastic
TUF-2000S Wall-mount-cast aluminum
TUF-2000U Panel-mount
TUF-2000M Modular host
TUF-2000D Explosion-proof
TUF-2000F2 Fixed Mounted

Optional transducer

Types Spec. Model Measurement Range Temperature Dimension
Insertion Standard TC-1 DN50~DN6000 -30~160℃ 190×80×55mm
Lengthen TC-2 DN80~DN6000 -30~160℃ 335×80×55mm

More about: Sewage Flow Meter Selection

Insertion Type Ultrasonic Flow Meter Applications

In terms of the measurement medium, the ultrasonic flowmeter can measure both conductive liquids, such as water, and non-conductive liquids, such as desalted water and pure water. There are also sewage, mud, ore pulp, paper pulp, chemical fiber pulp, corn syrup, fruit juice, alcohol, drugs, blood plasma and many other special media. As long as it is a single uniform and stable ultrasonic transmission liquid, it can be measured.

There are 5 conditions to use Insertion Type Ultrasonic Flow Meter:

  • When the pipe diameter is large, the pipe diameter is generally ≥DN80mm;
  • When there is a tight inner lining;
  • When the scale in the pipe is serious;
  • When the pipe is a poor conductor of ultrasonic;
  • When the external clamped ultrasonic flowmeter probe cannot reach the required signal strength or the measurement is unstable.

In the above cases, the use of Insertion Flow Meter can be considered.

insertion type ultrasonic flow meter installation

Insertion type ultrasonic flow meter installation needs to refer to the user manual we provide for step-by-step operation.

  1. Selection of installation method

    Insertion Type Ultrasonic Flow sensors are suitable for pipes above DN80mm, and are usually installed by Z method.
    Only when the installation space is not enough, the pipe smaller than DN200mm can be installed by V method. For pipes larger than DN200mm, parallel insertion sensors can be selected.

  2. Input the measurement parameters to get the installation distance;

    For parallel insertion sensors, the probe option is PI water meter probe: the included angle of the probe pipe is 0°; the length of the fluid in the static state is 0mm; the linear distance between the probes is optional between 200mm and 300mm, and finally determined by the actual installation results; single The contract delay time is 0μs.
    When using the Z method for standard Insertion sensors, the installation distance = inner diameter – 10mm.

  3. Mounting point positioning

    (1) Positioning of the Z method
    The positioning of the Z method must ensure the following two points:
    Installation distance = the vertical distance between two sensors along the pipe axis.
    Make sure that the two sensors are on the same axis (the connecting line of the two sensors passes through the axis).
    (2) Positioning of the V method
    The positioning of the V method must ensure the following two points:
    Installation distance = the vertical distance between two sensors along the pipe axis.
    Make sure both sensors are on the same level.
    (3) Positioning of parallel insertion sensors
    The positioning of the parallel insertion sensor should ensure the following two points:
    Installation distance = the vertical distance between two sensors along the pipe axis.
    Make sure that the two sensors are on the same level, and the insertion depth is 1/3 of the inner diameter of the pipe.

  4. Welded ball valve base;

    When the installation pipe is made of carbon steel, it can be directly welded and installed.
    For pipes that cannot be directly welded (such as cast iron, cement pipes, etc.), custom-made special pipe clamps (with sealing rubber pads) are required. The base of the ball valve has been welded on the pipe collar in advance, and the pipe collar is directly fastened to the pipe under test.
    Before welding, the surface of the pipeline near the welding spot must be cleaned. Be careful not to include air holes during welding to prevent water leakage or even breakage.

  5. Opening of pipeline under pressure

    Put the sealing gasket into the welded base, and then screw the special ball valve in, pay attention to compress the sealing gasket to prevent water leakage.
    Connect the sealing sheath of the hole opener with the external thread of the ball valve.
    After tightening, open the ball valve, push the drill pipe until it touches the outer wall of the pipe, connect the hand drill and the drill pipe and lock them, turn on the power, and start drilling.
    Keep the electric drill at a low speed during the drilling process, and the speed should not be too fast to avoid sticking the drill or even breaking the drill bit.
    After drilling through, pull out the drill pipe until the front end of the hole saw bit retreats behind the ball valve core. Close the ball valve and remove the hole opener.

  6. Calculation of insertion depth

    The Insertion sensor is precision-cast in a stainless steel mold, and the length of the sensor has been fixed before leaving the factory.
    Therefore, the insertion depth of the sensor probe rod is only related to the thickness of the pipe wall.
    The length of the probe rod of the standard insertion type sensor left outside the pipe is L=25mm-wall thickness, and the length of the probe rod of the extended insertion type sensor left outside the pipe is L=90mm-wall thickness.

  7. Probe Rod Installation

    Screw the sensor probe stem into the special ball valve. When screwing to the ball valve core, lightly tighten the lock nut to prevent water leakage. Open the ball valve and continue to screw in the sensor until the insertion depth of the sensor is L=25mm-wall thickness.

  8. Debugging of Insertion sensors

    When the waterproof joints of the two sensors are relatively inward, the emission angle of the sensor is correct.
    Then use the calculated insertion depth as a reference to rotate the probe slightly clockwise or counterclockwise to find the maximum value of signal strength and signal quality.
    Tighten the lock nut to prevent the probe stem from turning and water leakage.

  9. Check whether the installation is correct

    Check whether the sensor is installed correctly. If the installation requirements are met, the junction box can be potted with silica gel, and then the junction box sealing cover and the cable waterproof joint can be tightened to prevent water leakage.

Large Pipe Flow Meters

The cost of monitoring the flow in a large diameter pipe is very high. Today, modified intrusive and clip-on flowmeter technology can be used to measure flow in large pipelines. Using Insertion flow meters, it is possible to monitor the flow in pipes up to 6000 mm in diameter.

Of course, except for ultrasonic flow meters. There are other flow meters suitable for liquid flow in large-diameter pipes.

When measuring the liquid flow of large-diameter pipes, the following factors should be considered when selecting a flow meter:

  • The pressure loss should be as small as possible;
  • Due to the low flow rate (to reduce operating costs), the inner wall of the pipeline is easy to deposit dirt and sludge;
  • The measuring range of the flowmeter used should be particularly large to adapt to the disparity of browsing in different time periods;
  • The protection level of the flowmeter should also meet the requirements of the environment.

Extended reading: Magnetic Large Dia. Pipe Flow Meter

What is insertion type flow meter?

The insertion flow meter can provide a low-cost alternative to full-caliber flow equipment. Full-caliber flow equipment will take up a lot of space and require a lot of installation work. And there are special difficulties in service or calibration.

Drill a hole of appropriate size in the pipe wall. And a method of fixing the insertion gauge is adopted. This can be a saddle clamp, a welded threaded short tube, or a mating flange.

Then insert the Insertion sensor into the pipe to the depth recommended by the manufacturer. If on-site calibration is possible, the depth can be adjusted to improve accuracy.

Once the meter is fixed, it will only measure the speed at this time. And the volume flow cannot be calculated before considering the pipe diameter and the nature of the medium. Usually in the electronic flow computer/display unit.

More Ultrasonic Flow Measurement Applications and Markets

Ultrasonic Flow Detectors

Ultrasonic flow detectors are an important part of ultrasonic flow meters. Ultrasonic flow detectors are also called ultrasonic transducers. Ultrasonic…

If the insertion type of flowmeter is too troublesome to install. Then you can consider using a clamp-on ultrasonic flow meter. Simple and easy to use.

Sino-Inst, Manufacturer for Insertion Type Ultrasonic Flow Meter TUF2000. It can measure a single sound-conducting liquid medium of DN50 – 6000mm. It can measure even liquids such as water, seawater, oil, and slurry.

Sino-Inst’s Insertion Type Ultrasonic Flow Meter TUF2000, made in China, Having good Quality, With better price. Our flow measurement instruments are widely used in China, India, Pakistan, the US, and other countries.

Ultrasonic Clamp on Flow Meter

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Ultrasonic Clamp on Flow Meter is composed of an integrated host and external clamp on sensors. Clamp on Flow Sensors are available at room temperature and high temperature.

Clamp on flow meter (Model: 2000) is composed of an integrated host and ultrasonic clamp on sensor. Clamp on flow meter is widely used in online flow measurement of various liquids. Just stick the external clamp sensor on the pipe surface. Compared with the traditional flowmeter, it does not need to cut off the pipe and flow. The installation is convenient and quick, and the non-destructive installation is truly realized.

Clamp on Flow Meter Reference price: USD 470.00/pc

Sino-Inst offers a variety of  Ultrasonic flow meters for flow measurement. If you have any questions, please contact our sales engineers.

Request a Quote
Ultrasonic Flow Meters

Features Of Ultrasonic Clamp-on Flow Meter

  • High Accuracy measuring 
    • Linearity: better than 0.5%, Repeatability: better than 0.2%, Accuracy: better than ±1% 
  • Wide Measuring Range 
    • Several types transducer for selection, measuring pipe size from DN15mm to DN6000mm
  • English menu
    • Different version UFM can support English display, easy to operate
  • High Reliability
    • Adopt low voltage, multi-pulse technology to improve accuracy, useful life and reliability
  • Strong Anti-interference
    • Dual-balance signal differential receiver/driver circuit to avoid interference of converter, TV tower, high voltage line etc.
  • Powerful Recording Function
    • Automatically record the following data:
    • 1. The totalizer data of the last 512 days/128 months/5 years
    • 2. The time and corresponding flow meter of the last 64 times of power on and off events
    • 3. The working status of the last 32 days

Optional transducers for Ultrasonic Clamp on Flow Meter

Optional Host

According to different installation condition, there are many models separated ultrasonic flowmeter for selection:

Wall-mount-plastic
Wall-mount-cast aluminum
Panel-mount
Modular host
Explosion-proof
Fixed Mounted

Specifications of Ultrasonic Clamp on Flow Meter

Item Performance and Parameter
Convertor Principle transit-time ultrasonic flowmeter
Accuracy

Flow: over 1%-2%(battery-powered supply over ±2% )，Heat: over ±2%，Repeatability: over 0.2%
Display

2×20 character LCD with backlight, support the language of Chinese, English and Italy Convertor dimension:170*180*56cm
Operation Support 16 key light touch keyboard and the Simulation keyboard software
Signal Output

1 way 4~ 20mA output, electric resistance 0~ 1K，accuracy0. 1%

1 way OCT pulse output ( Pulse width 6 ~ 1 0 0 0 ms，default is 2 0 0 ms)
1 way Relay output
Signal Input

3 way 4~ 20mA input, accuracy 0. 1%，acquisition signal such as temperature, press and liquid level

Connect the temperature transducer Pt100, can finish the heat/energy measurement
Data interface

Insulate RS485 serial interface, upgrade the flow meter software by computer, support the MODBUS, METER-BUS etc.
Other Function Automatically remember the previous flow/energy data of 512 days,  128 months and 10 years
Automatically remember the previous flow/energy data of 512 days working condition and check it
Automatically remember the previous 32 times power on/off time and flow rate
Special Cable

Twisted-pair cable, generally, the length under 50 meters; Select the RS485 communication. The transmission distance can over 1000m.
Pipe Installation Condition Pipe Material

Steel, Stainless steel, Cast iron, Copper, Cement pipe, PVC, Aluminum, Glass steel product, liner is allowed.
Pipe Diameter 15mm—6000mm
Straight length pipe

Transducer installation should be satisfied: upstream10D, downstream 5D, 30D from the pump.
Measuring Medium Type of Liquid

Water (hot water, chilled water, city water, sea water, waste water, etc.);  Sewage with small particle content; Oil (crude oil, lubricating oil, diesel oil, fuel oil, etc.);  Chemicals (alcohol, acids, etc.); Plant effluent; Beverage, liquid food;  Ultra-pure liquids; Solvents and other liquids

More about: Sewage Flow Meter Selection
Temperature

Standard Transducer: -30–90℃; High-temperature transducer: -40–160℃
Turbidity No more than 10000ppm and less bubble
Flow rate 0–±12 m/s
Working Environment Temperature Main Unit: -20–60℃
Flow transducer: -40–160℃; 
Temperature transducer: according to the customer’s demands.
Humidity

Main Unit: 85% RH; Flow Transducer: Ip67
Power Supply DC  24V or AC  85-264V
Power Consumption 1.5W

Extended reading: Portable ultrasonic flow meter for water

Ultrasonic clamp on flow meter Pros and Cons

Advantages of Ultrasonic clamp on flow meter

  • The clamp on ultrasonic flowmeter is convenient to carry, easy to operate, intuitive to read data, and can memorize and save the read data;
  • The measurement liquid is relatively wide, including water, sea water, slurry or oil, acid and alkali and other homogeneous liquids;
  • Non-contact measurement method, light weight, small size;
  • The installation of the clamp-on ultrasonic flowmeter probe is simple, and probes of different sizes can detect pipes of different pipe diameters. Under the condition of ensuring accuracy, the clamp-on ultrasonic flowmeter can measure pipes with a minimum of DN15 and a maximum of DN3000. Pipeline
  • The external clamp ultrasonic flowmeter does not need to destroy the pipeline during the flow measurement process, and the probe can directly touch the straight pipe section without pressure loss, and the flow measurement can be performed on the installed pipe;
  • Suitable for measuring pipes of different materials. Common metal pipes (stainless steel, carbon steel, cast iron, etc.), plastic pipes, etc., and some pipes with better sound-transmitting materials.

Disadvantages of Ultrasonic clamp on flow meter

Because the temperature of the measured liquid is limited by the temperature resistance of the coupling material between the ultrasonic probe and the pipe, and the original data of the sound transmission velocity of the measured liquid at high temperature is incomplete. At present, the general ultrasonic flowmeter can only be used to measure the fluid below 200 ℃.

The measurement circuit of ultrasonic flowmeter is more complicated than that of general flowmeter. This is because the flow velocity of liquid in general industrial measurement is often a few meters per second, and the propagation speed of sound waves in the liquid is about 1500 m/s.

Therefore, the change of the measured fluid velocity (flow) has the greatest impact on the change of sound velocity, which is also on the order of 10-3. If the accuracy of measuring the flow velocity is required to be 1%, the accuracy of the measurement of the speed of sound needs to be 10-5~10-6 orders of magnitude. Therefore, a complete measurement circuit can be achieved.

This is the reason why ultrasonic flowmeters can only be applied in practice only under the premise of the rapid development of integrated circuit technology.

The measurement accuracy is not high enough. At present, the accuracy level of our ultrasonic flowmeters is generally level 1 or lower. Ultrasonic flow meters are greatly affected by external conditions. For example, high electric and magnetic fields near the measuring pipeline will affect the measurement of the ultrasonic flowmeter.

Read more about: Non-invasive Ultrasonic Tank Level Sensor Working Principle

Portable clamp on flow meter

Portable Ultrasonic Flow Meter

The portable ultrasonic flowmeter ( Model: 3000H) uses a non-invasive sensor to measure liquid flow. The installation process is extremely simple. There is no need to destroy the pipeline during the measurement process and no need to stop production. The sensor is not in contact with the measured medium. Battery powered, small size, light weight and easy to carry. Realize the real sense of mobile flow measurement, online detection, is a real sense of portable ultrasonic flowmeter.

Handheld Ultrasonic Flow Meter

Handheld Ultrasonic Flow Meter

Handheld Ultrasonic Flow Meter ( Model:2000H) has been successfully applied to measurement work in various industries. The measuring range is 20-6000mm (0.5-20 inches). A non-contact measurement method is adopted. Flexible operation and easy to carry. Conductive or non-conductive, corrosive or non-corrosive liquids can be measured. Various fluids: water, pure water, sewage, sea water, chemical fluids, river water, fuel Oil etc. can be measured.

Check more 1 Inch Flow Meters.

Clamp on Ultrasonic Flow Meter

Clamp on Ultrasonic Flow Meter

Clamp on Ultrasonic Flow Meter ( Model: 3000S) is composed of a host and an external clamp sensor. The flow measurement of various liquids can be completed by simply sticking the external clamp sensor on the surface of the pipeline. Compared with the traditional flowmeter, it does not need to cut off the pipe and flow, the installation is convenient and quick, and it truly realizes the lossless installation. Compared with the common TDC algorithm of other manufacturers, TGA measurement technology is an algorithm for measuring process time with higher speed and higher accuracy.

Clamp on liquid flow meter

The external clamp ultrasonic flowmeter can measure the flow rate of a single uniform liquid that can conduct ultrasonic waves, such as water, sea water, sewage, acid and alkali, alcohol, beer, various oils, etc.

Read more about Digital Beer Flow Meters for Sale|Brewery-Wine-Craft Beer Brewing Process management system 

Clamp on water flow meter

Clamp on water flow meter refers to the use of external clamp-on ultrasonic flow meters to measure water flow. Especially when other flow meters are not applicable.

For example, the flow measurement of ultrapure water equipment only uses an external clamp-type ultrasonic flowmeter.
why?

Ultra-pure water is non-conductive and has extremely high hygiene requirements, so the clamp-on ultrasonic flowmeter is the first choice. The general contact measurement and conductive medium measurement methods will be excluded. Let’s analyze it in detail below.

First, let’s take a look at the physical characteristics of pure water and ultrapure water. The filter cartridge of the ultra-clean filter device is made of pure polypropylene, and activated carbon is used to remove inorganic and organic trace pollution of ion exchange resin (nuclear grade) and adsorber resin. Dedicated ion exchange resin (nuclear grade) removes inorganic ions. After the adsorber resin removes dissolved organic matter. The pore size of the disinfection filter is 0.2um. The conductivity of pure water and ultrapure water obtained through such purification equipment: 0.055uS/cm. Bacteria content: 1CFU/ml, generally used in fields with high requirements such as biopharmaceuticals.

Secondly, we look at the application conditions of various flow meters.

In addition to measuring the volume flow of general conductive liquids, the electromagnetic flowmeter can also be used to measure the volume flow of strong corrosive liquids such as strong acids and alkalis and uniform liquid-solid two-phase suspension liquids such as mud, mineral pulp, and paper pulp. Since the conductivity of pure water is only 0.055, it cannot be measured.

Look at the turbine flowmeter again. Turbine flowmeter is a contact measurement, and pure water and ultra-pure water have particularly high requirements for materials, so the main material must be 316L when manufacturing, and the use of sanitary clamp joints will increase the production cost immediately.

Clamp on water flow meter is a non-contact meter. It can not only measure the flow of medium with large pipe diameter, but also can be used to measure the medium that is not easy to touch and observe. Its measurement accuracy is very high, and it is almost free from the interference of various parameters of the measured medium. In particular, it can solve the flow measurement problems of strong corrosive, non-conductive, radioactive and flammable and explosive media that other instruments cannot.

In summary, the ultrasonic flowmeter is the best choice for the flow measurement of the purified water equipment in the ultrapure water system.

FAQ

Strap on flow meter X3

The clamp-on flow meter is a flow meter with an external clamp-on flow sensor. Most flow meters are in-line pipe section mounts. The Clamp-on flow meter is a flow meter that only needs to be clamped on the outside of the pipe to measure the flow rate. This is important for many pipes that cannot be cut and bored.

The installation of the ultrasonic flow meter needs to be done according to the operating instructions of the ultrasonic. Because of different forms of ultrasonic flowmeter, the installation method is also different.

Sino-Inst supplies ultrasonic flow meters with an accuracy of mostly 1%. This accuracy can meet the needs of most users. Of course, there are other flowmeters with higher accuracy. For example, 0.5% electromagnetic flowmeter.

Users can choose according to your measurement requirements.

Mechanical Flow Meters

Selection Guide What is a mechanical flow meter? Mechanical flow meters are a type of flow…

Totalizer Flow Meters

Totalizer flow meter is also called Totalizing flow meter. It refers to the totalizing function of…

Sino-Inst, Manufacuturer for Ultrasonic Clamp on Flow Meters. It can measure a single sound-conducting liquid medium of DN 25—1200mm. It can measure even liquids such as water, sea water, oil, and slurry.

Sino-Inst’s Ultrasonic Clamp on Flow Meter, made in China, Having good Quality, With better price. Our flow measurement instruments are widely used in China, India, Pakistan, US, and other countries.

Clamp on Ultrasonic Flow Meter

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Clamp on Ultrasonic Flow Meter is a wall-mounted ultrasonic flow meter using TGA time difference technology. TGA is an algorithm for measuring process time with higher speed and accuracy.

Clamp on Ultrasonic Flow Meter ( Model: 3000S) is composed of a host and an external clamp sensor. The flow measurement of various liquids can be completed by simply sticking the external clamp sensor on the surface of the pipeline. Compared with the traditional flowmeter, it does not need to cut off the pipe and flow, the installation is convenient and quick, and it truly realizes the lossless installation. Compared with the common TDC algorithm of other manufacturers, TGA measurement technology is an algorithm for measuring process time with higher speed and higher accuracy.

Clamp on Ultrasonic Flow Meter Reference price: USD 870.00/pc

Sino-Inst offers a variety of  Ultrasonic flow meters for flow measurement. If you have any questions, please contact our sales engineers.

Request a Quote
Ultrasonic Flow Meters

Features of Clamp on Ultrasonic Flow Meter

Compared with other conventional flowmeters, the LRF-3000S ultrasonic flowmeter has the following characteristics in addition to the flexibility of on-site installation, high response speed and better measurement capability under low flow rates:

  1. Use an independent high-performance FPGA chip with 400,000 gate arrays. The measurement rate can be greater than 300 times per second. Compared with other brands, it has a great improvement in the resistance to air bubbles in the measurement pipe diameter. It can withstand continuous bubbles for up to 5 seconds.
  2. Increased signal strength. It has greater penetrating power to various scales, rust in the pipe and the inner lining of the pipe.
  3. 4-line LED display. Easy to operate.
  4. The sensor adopts our unique manufacturing process and matching technology. The zero point range can be controlled within 0.03m/s. The static time difference between each pair of sensors is less than 2 nanoseconds. This effectively guarantees the authenticity of the measured time difference.

Specifications of Clamp on Ultrasonic Flow Meter

Performance specification
Flow range 0 ~ ±12m /s (0~ 40ft /s)
Accuracy 1.0% of measured value
Repeatability 0.20%
Pipe Size DN25~DN1200mm
Function Specification
Outputs Analog output: 4~20mA, max load 750Ω.
Pulse output: 0~10KHz
Power Supply 10 ~ 36VDC or 10~24VAC
Keypad 16 keys(4X4) touch keys
Display 240*128, 4-line LCD display
Temperature Transmitter: -14℉~140℉(-20℃~60℃)
Transducer:-40℉~176℉(-40℃~80℃,TT01  ,Standard)
Transducer:-40℉~266℉(-40℃~130℃,TT03  ,High Temp)
Physical specification
Transmitter PC+ABS, IP65
Transducer Encapsulated design,IP68
Double-shielded transducer cable
Standard/maximum cable length:30ft/1000ft(9m/300m)
Packaging 20*22*23.5cm, 3.0kg

External clamp sensor:

Sensor potting
Room temperature external clamp sensor
High temperature external clamp sensor
  1. The signal cable and sensor are manufactured in one piece without wiring;
  2. Hidden tube tie design, more stable and beautiful after installation;
  3. A pair of sensors can achieve DN25-DN1200mm measurement to meet the use of a larger range of pipe diameters;
  4. Protection grade IP68, can work underwater without water ingress.

Clamp on Ultrasonic Flow Meter Working Principle

Clamp on Ultrasonic Flow Meter adopts the measurement principle of time difference method. It uses the ultrasonic wave emitted by the sensor to propagate in the flowing fluid. The sound wave propagation speed in the downstream direction will increase, and the backward direction will decrease. In the same propagation distance, there will be different transmission times. According to the difference between the transmission time and the measured The relationship between fluid velocity measures the fluid velocity.

The flow rate of the fluid is different in different positions in the tube. The flow rate in the center of the tube is faster than the flow rate near the wall of the tube. The flow velocity distribution of the fluid in the pipeline can be represented by the flow velocity cross-sectional distribution diagram.

By setting the flowmeter and considering the cross-sectional distribution of the flow velocity, the average flow velocity can be calculated. Then the volume flow of the fluid can be obtained according to the cross-sectional area of the pipe.

Notes:
V measure fluid velocity
M ultrasonic reflection times
D pipe diameter
θ The angle between the ultrasonic signal and the fluid
T up The time when the downstream sensor transmits the signal to the upstream
T down Time from upstream sensor to downstream
ΔT = T up – T down

Guess You’ll Like: Ultrasonic flow meters types & technical guide

Clamp on water flow meter

Clamp on water flow meter means to measure the water flow rate by clamping the ultrasonic flowmeter sensor outside the pipe. The sensor is non-invasive. Of course, according to the actual requirements of the measurement, it can be fixed or portable.

So, why are we willing to use Clamp on ultrasonic flowmeter to measure the flow rate of water?

There are many types of flow meters for measuring water. Common ones are: V cone flowmeter, electromagnetic flowmeter, metal rotor flowmeter, vortex flowmeter, liquid turbine flowmeter, ultrasonic open channel flowmeter, ultrasonic flowmeter, etc.

There are many types of flow meters for measuring water. Common ones are: V cone flowmeter, electromagnetic flowmeter, metal rotor flowmeter, vortex flowmeter, liquid turbine flowmeter, ultrasonic open channel flowmeter, ultrasonic flowmeter, etc.

Advantages of Clamp on water flow meter for water measurement:

  1. External clamp installation, without damaging the pipeline. easy and convenient.
  2. It is convenient to measure ultra-small and ultra-large pipes. As small as Φ9.5. As large as DN6000.
  3. Electromagnetic flowmeter is used to measure the volume flow of conductive liquid with conductivity greater than 5μS/cm. Then other water flow with conductivity less than 5μS/cm can be measured with ultrasonic clamp on water flow meter. For example, ultrapure water.
  4. For pure water, drinking water, etc., it is necessary to keep clean and hygienic. If contact flow meters such as turbine flow meters and orifice flow meters are used, the material must be strictly required. At least 316SS material is required. Then the cost of the contact flowmeter will be very high.

Read more about: Non-invasive Ultrasonic Tank Level Sensor Working Principle

Portable clamp-on ultrasonic flow meter

Portable Ultrasonic Flow Meter

The portable ultrasonic flowmeter uses a non-invasive sensor to measure liquid flow. The installation process is extremely simple. There is no need to destroy the pipeline during the measurement process and no need to stop production. The sensor is not in contact with the measured medium. Battery powered, small size, light weight and easy to carry. Realize the real sense of mobile flow measurement, online detection, is a real sense of portable ultrasonic flowmeter.

Handheld Ultrasonic Flow Meter

Handheld Ultrasonic Flow Meter has been successfully applied to measurement work in various industries. The measuring range is 20-6000mm (0.5-20 inches). A non-contact measurement method is adopted. Flexible operation and easy to carry. Conductive or non-conductive, corrosive or non-corrosive liquids can be measured. Various fluids: water, pure water, sewage, sea water, chemical fluids, river water, fuel Oil etc. can be measured.

Sino-Inst, Manufacuturer for Clamp on Ultrasonic Flow Meter. It can measure a single sound-conducting liquid medium of DN 25—1200mm. It can measure even liquids such as water, sea water, oil, and slurry.

Sino-Inst’s Clamp on Ultrasonic Flow Meter, made in China, Having good Quality, With better price. Our flow measurement instruments are widely used in China, India, Pakistan, US, and other countries.

Ultrasonic Flow Meters

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The ultrasonic flow meter measures the liquid flow rate quickly and effectively. There are two types of ultrasonic flowmeter technology: Doppler frequency shift and transit time.

Transit time ultrasonic flow meter is most suitable for measuring the flow of cleaning liquid. Therefore, it is the most popular type of ultrasonic meter.

Doppler ultrasonic flow meter can measure the frequency difference of sound waves reflected from bubbles or particles in the airflow. It is suitable for aerated or dirty liquids.

Sino-Inst offers a variety of  Ultrasonic flow meters for flow measurement. If you have any questions, please contact our sales engineers.

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More Flow Meters

Featured Ultrasonic Flow Meters for Liquids

Portable Ultrasonic Flow Meter
Handheld Ultrasonic Flow Meter
Clamp on Ultrasonic Flow Meter
Ultrasonic Clamp on Flow Meter
Strap on flow meter X3
Ultrasonic Water Meter for Residential Water
New Products! Insertion Type Ultrasonic Flow Meter-Heat Meter–Mono/multi-Channel
Ultrasonic Insertion Flow Meter
In-Line Ultrasonic Flow Meter
Insertion Ultrasonic Water Flow Meter
Dual Channel Ultrasonic Water Meter
Multipath Transit Time Ultrasonic Flow Meter
Ultrasonic Open Channel Flowmeter
Wall Mounted Ultrasonic Doppler Flow Meter
Portable Doppler Flow Meter

Transit time Ultrasonic Flow Meter Working Principle

Transit time Ultrasonic Flow Meter adopts the measurement principle of time difference method. It uses the ultrasonic wave emitted by the sensor to propagate in the flowing fluid. The sound wave propagation speed in the downstream direction will increase, and the backward direction will decrease. In the same propagation distance, there will be different transmission times. According to the difference between the transmission time and the measured The relationship between fluid velocity measures the fluid velocity.

The flow rate of the fluid is different in different positions in the tube. The flow rate in the center of the tube is faster than the flow rate near the wall of the tube. The flow velocity distribution of the fluid in the pipeline can be represented by the flow velocity cross-sectional distribution diagram.

By setting the flowmeter and considering the cross-sectional distribution of the flow velocity, the average flow velocity can be calculated. Then the volume flow of the fluid can be obtained according to the cross-sectional area of the pipe.

Notes:
V measure fluid velocity
M ultrasonic reflection times
D pipe diameter
θ The angle between the ultrasonic signal and the fluid
T up The time when the downstream sensor transmits the signal to the upstream
T down Time from upstream sensor to downstream
ΔT = T up – T down

Guess You’ll Like: Ultrasonic flow meters types & technical guide

Ultrasonic Doppler Flow Meter Working Principle

Ultrasonic Doppler Flow Meter uses the physical principle of Doppler frequency shift to measure the water flow velocity.

Doppler effect (Doppler frequency shift) principle:
The sound waves emitted by one object are received and reflected by another object. If the object emitting the sound wave is moving relative to the receiving object. The frequency of the sound wave received by the receiving object will be different from the frequency of the emitted sound wave.

If the relative distance between two objects is reduced, the received frequency will increase.
If the relative distance between two objects is increased, the received frequency will decrease.

Such Doppler effects often occur in daily life. For example: when you hear the sirens (sounds) of an oncoming police car. The sound will appear higher in frequency. When the police car is far away from you, the sound it hears will become lower.

Through the difference between the frequency of transmitting ultrasonic waves and the frequency of receiving ultrasonic waves, the specific flow rate can be calculated. Then the water level is measured by the pressure sensor, and the water passing area is calculated from the water level and channel size.
Finally, the velocity and area are integrated to calculate the final instantaneous flow.

Calculation formula:
Velocity × water area × 3600 seconds = instantaneous flow rate (cubic meters/hour)

Ultrasonic Open channel flow meter working principle

The open channel flowmeter is based on the specific shape of the Parshall metering groove/weir plate metering groove. It guarantees a certain liquid level and knows a certain flow rate. The Parshall groove/weir plate metering groove is selected as the specific flow channel. The measurement accuracy is high. Easy to install.

The sensor measures the height of the liquid level, which is processed by 89C52 series single-chip microcomputers to obtain the instantaneous flow and cumulative flow values.

The flow can be expressed by the following formula:
　　Q=KHn
　　Q: Instantaneous flow rate (t/h)

K: Flow rate constant
　　H: height of liquid level n: nth power value

The instantaneous flow is processed by the cumulative accumulation to obtain the cumulative flow.

Read more about: Liquid Flow Meters Guide

Sino-Inst, Manufacturer for Ultrasonic Flow Meters. It can measure a single sound-conducting liquid medium of DN 25—150mm. It can measure even liquids such as water, sea water, oil, and slurry.

Sino-Inst’s Ultrasonic Flow Meter, made in China, Having good Quality, With better price. Our flow measurement instruments are widely used in China, India, Pakistan, US, and other countries.

Precession Vortex Gas Flowmeter

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Precession vortex flowmeter is a new type of gas flowmeter. It can be used for the measurement of natural gas, propane, air, nitrogen and other gases.

Precession Vortex Gas Flowmeter, like vortex flowmeter, is a velocity flowmeter. The cost performance of the intelligent precession vortex flowmeter is higher than vortex flowmeter. The intelligent precession vortex flowmeter can only measure gas. Precession Vortex Gas Flowmeter can be made into an integrated temperature and pressure compensation. And can measure various gases. Such as compressed air, oxygen, biogas, natural gas, coal gas, etc.

Precession Vortex Gas Flowmeter reference price: DN50, USD 600.00/pc.

Sino-Inst offers a variety of flow meters for flow measurement. If you have any questions, please contact our sales engineers.

Request a Quote
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Features of Precession Vortex Gas Flowmeter

  • No mechanical moving parts, not easy to corrosion, stable and reliable, long life, long-term operation without special maintenance;
  • 16 bit computer chip, high integration, small size, good performance, strong function;
  • The intelligent flowmeter integrates flow probe, microprocessor, pressure and temperature sensor into one, and adopts built-in combination to make the structure more compact, which can directly measure the flow, pressure and temperature of the fluid, and automatically real-time tracking compensation and compression factor correction;
  • Double probe detection technology, new sensor processing technology and reasonable installation method are adopted to greatly improve the signal strength, so that the sensor can accurately detect the signal and suppress the interference caused by pipeline vibration.
  • Adopt the domestic leading intelligent anti-seismic technology, effectively restrain the disturbance signal caused by vibration and pressure fluctuation;
  • The Chinese character dot matrix display screen is adopted, which can display the volume flow under working state, volume flow under standard state, total volume, medium pressure, temperature and other parameters directly.
  • The converter can output frequency pulse, 4 ~ 20mA analog signal, and has RS485 interface, can be directly connected to the computer network, transmission distance up to 1.2km;
  • With signal transfer output of several physical parameters, users can choose any of them.
  • Pressure and temperature signals are the input mode of the sensor with strong interchangeability.
  • The power consumption of the whole machine is low, which can be supplied by built-in battery or external power supply.

Specifications of Precession Vortex Gas Flowmeter

Inside nominal
diameter
DN (mm)		 Range of
 flow
(m3/h)		 Nominal pressure
(Mpa)		 Pressure
 loss
(kpa)		 Class of
accuracy		 Repetitive Shell material
15 0.6~12 1.6
2.5
4.0
6.3
10.0
16.0
25.0		 △P=ρ/1.205×PN 1.0
1.5		 Less than the base error limit is definitely  worth 1/3 Aluminum alloy 304
stainless  Steel
20 1~15
25 2~40
32 3~70
40 4~80
50 6~130
65 8~400
80 15~500
100 40~1000
125 50~1200
150 100~2000
200 360~3600

Further reading: Industrial LPG/Propane flow meter

Vortex Flowmeter VS. Precession Vortex Flowmeter

The common point of precession vortex flowmeter and vortex flowmeter

  • Both flow meters are velocity flow meters;
  • Both flow meters can be made into a temperature and pressure compensation system, and can measure various gases, such as compressed air, oxygen, biogas, natural gas, coal gas, etc.;
  • Both flowmeters have no mechanical moving parts, are not easy to be corroded, are stable and reliable, have a long life, and do not require special maintenance for long-term operation;
  • The highest accuracy of both flowmeters can reach 1.0%.

Biogas Flow Meters Selection Guide

The difference between precession vortex flowmeter and vortex flowmeter

  • The working principles of the two flow meters are different;
  • The intelligent precession vortex flowmeter can only measure gas, while the intelligent vortex flowmeter can also measure liquid and steam;
  • The maximum caliber of the intelligent precession vortex flowmeter can only achieve 200 caliber, while the maximum caliber of the intelligent vortex flowmeter can achieve 1000 caliber, of which 300-1000 is a plug-in type;
  • The cost performance of the intelligent precession vortex flowmeter is higher than that of the intelligent vortex flowmeter;

Precession Vortex Gas Flowmeter Structure

Flow meter is composed by below parts:

  1. Swirl generation body
    Made by aluminium alloy, with certain angle screw blades, it is fixed in front of the housing contraction, then press the fluid and generate strong swirl flow.
  2. Housing
    It has flange itself, and with certain shape fluid channel, according to different working pressure, the housing could adopt cast aluminium alloy or stainless steel.
  3. Intelligent flow totalizer
    It is combined of temperature, pressure testing analogue channel, flow testing no. Channel and micro processing unit, LCD drive circuit and other assistant circuit, with the extermal output interfernce.
  4. Temperature sensor
    Use the PT100 platinium resistance as the temperature sensitive element, under certain temperaure range, the resistance and temperature is correspond with each other.
  5. Pressure sensor
    Use the diffused silicon piezoresistive type bidge road as the sensitive element, the bridge arm
    resistance will happen some expected change under pressure effect, under certain excitation current, the two output terminal potential difference in proportion to the outer pressure.
  6. Piezocrystal flow sensor
    It is installed at the throat near the housing contraction section, it could test the frequency of swirl.
  7. Clear swirl part
    It is fixed at the housing exit section, the function is clear the swirl and decrease the influence to the downstream instruments performance.

Precession Vortex Gas Flowmeter Working Principle

The flow profile of the Precession Vortex Gas Flowmeter is similar to the profile of a Venturi tube.

A set of spiral guide vanes are placed on the inlet side. When the fluid enters the flow sensor, the guide vane forces the fluid to produce a violent vortex. When the fluid enters the diffusion section, the vortex flow is affected by the backflow and starts to rotate twice. A gyroscopic vortex precession phenomenon is formed.

The precession frequency is proportional to the flow rate and is not affected by the physical properties and density of the fluid. The second rotation precession frequency of the fluid measured by the detecting element can obtain good linearity in a wide flow range.

The signal is amplified, filtered and shaped by a preamplifier and converted into a pulse signal proportional to the flow rate. Then, together with the detection signals of temperature and pressure, they are sent to the microprocessor for integration processing. Finally, the measurement result is displayed on the LCD screen. Including instantaneous flow, cumulative flow and temperature and pressure data.

Precession Vortex Gas Flowmeter Flow Totalizer Working Principle:

Flow totalizer is combined with temperature,pressure testing analogue channel, flow sensor channel and micro processing unit, and with the external output signal interface, with many output signals, the micro processor in the flow meter will carry out the temperature and pressure compensation according to gas state equation, and carry out the compress factor amendment. The gas state equation as below:

In the formula:
QN ——flow volume under standard condition. (m3/h)；
QV ——flow volume under working condition. (m3/h)；
Pa ——local atmospheric pressure（KPa）；
P ——flow meter tapping hole measured meter pressure（KPa）；
PN ——atmospheric pressure under standard condition.（101.325 KPa）；

TN ——absolute temperature under standard conditions.（293.15K）；
T ——the absolute temperature of measured fluid.（K）；
ZN ——the gas compression factor under standard condition. ；
Z ——the gas compression factor under working conditions；
Note: when use the bell jar or negative pressure calibrate, use ZN/Z=1, for natural gas (ZN/Z)1/2=FZ is super compression factor, calculated according to the China National Petroleum Corporation standard SY／T6143－1996 formula.

Gas Flow Meter Types

The gas flow meter is a precision instrument used to measure the cumulative flow of gas in the pipeline. There are three main methods for flow measurement:

  • Positive displacement flow meters, such as diaphragm gas meters, Roots flow meters, etc., accurately measure and settle the gas by rotating the volumetric volume.
  • A velocity gas flow meter that measures the volume of fuel gas by the gas flow rate.
  • The way of gas measurement by pressure difference.
  1. Velocity flow meter
    Velocity flow meters are a type of flow meters based on the principle of directly measuring the flow velocity of a full pipe in a closed pipeline.
    ① Turbine flowmeter
    ② Vortex flowmeter
    ③ Precession vortex flowmeter
    ④ Time difference ultrasonic flowmeter
  2. Positive displacement flow meter
    Roots flowmeter (gas lumbar flowmeter)
  3. Differential pressure flowmeter
    Orifice flowmeter
    Venturi flowmeter

Read more about: Industrial Gas Measurement with Digital Gas Mass Flow Meters

Gas flow meter calibration

When using a gas flow meter, due to the influence of the error factors caused by the working conditions and environmental changes. After the uncertainty analysis and the verification of the field experiment data, to meet the requirements of the field use, it is necessary to perform the gas flow meter calibration.

How to calibrate the gas flow meter?

Work status check:
According to the requirements of the gas flowmeter instruction manual. First, check to determine whether the gas flowmeter is working properly.

According to the gas flowmeter calibration certificate or factory calibration sheet, check whether the input of the key parameters affecting the measurement accuracy in the converter is correct.

For pipelines with stopped flow conditions, check the zero flow of the flowmeter.

Remote calibration requires that the gas flow meter must be removed and sent to the secondary or primary flow standard for calibration, and then these new calibration factors are input to the existing data acquisition system.

Although remote calibration may provide higher accuracy. However, from a systematic point of view, this method may not be accurate and true, and it is expensive and laborious to operate.

What are the requirements for gas flow meter calibration?

If the flow conditions can be estimated, then the gas flowmeter can be calibrated under conditions different from the operating conditions. The parameter used to estimate the flow conditions is usually a number with respect to the inlet diameter of the gas flowmeter.

First, convert the operating condition range to a number range.

Secondly, the selected calibration equipment must meet the specified number range.

Then, calibrate under different pressure conditions or using different gases.

Within a certain accuracy level, the characteristics of standard differential pressure gas flow meters are well known. Likewise, the characteristics of certain types of turbine gas flow meters are also known.

In some cases, it is necessary to perform several tests before the final calibration to verify whether the gas flowmeter is operating in compliance with the calibration coefficient.

In the future, some work needs to be done to identify the performance of the vortex baffle gas flowmeter, and to determine the performance of the ultrasonic gas flowmeter and the complementary gas flowmeter in the case of high-pressure gas.

Gas flow turbine meter

Gas turbine flow meter is a velocity flow meter that measures gas flow. For natural gas, nitrogen, and gas trade measurement.

The gas turbine flowmeter integrates temperature, pressure, flow sensors and intelligent flow totalizers. The gas turbine flowmeter has high accuracy and good repeatability, so it is suitable for trade measurement and industrial process detection. It is widely used in many kinds of gas in petroleum, chemical, metallurgy, aviation, scientific research and other sectors and industrial fields. Such as natural gas, city gas, propane, butane, air, nitrogen and other gases measurement.

Gas Turbine Flow Meter reference price: USD900-2500/pc

Further reading: Nitrogen(N2) Flow Meter Types

Natural gas flow meter

Natural gas flow meter is mainly used for inline measurement of natural gas flow. Natural gas flow meter is mainly used for industrial production and trade settlement.

At present, the flowmeter products used for natural gas flow measurement roughly include: gas waist wheel flowmeter, gas turbine flowmeter, precession vortex flowmeter, thermal mass flowmeter, vortex flowmeter, ultrasonic flowmeter and orifice flowmeter Wait. Let’s make a simple comparison on the use of these flow meters.

Extended reading: 5 matters to pay attention to when choosing threaded Vortex Nitrogen Gas Flow Meter

LPG gas flow meter

LPG flow meter is used for flow measurement of liquefied petroleum gas. The flow measurement of LPG is very important in industrial production, transportation and trade settlement.

LPG gas (Liquefied petroleum gas) is a kind of hydrocarbon with propane and butane as its main components. LPG is used for heating, motor fuel, industrial applications and in agriculture. LPG can be in a gas or liquefied state. Different type industrial LPG flow meters with accurate and reliable performance. Such as thermal dispersion flow meter, Coriolis flow meter, gas turbine flow meter, vortex flow meters.

💡Industrial Propane Tank Level Indicators for Industrial Tank Level Measurement

Sino-Inst, Manufacuturer for Precession Vortex Gas Flowmeters.

Sino-Inst’s Precession Vortex Gas Flowmeters, made in China, Having good Quality, With better price. Our flow measurement instruments are widely used in China, India, Pakistan, US, and other countries.

Use Differential Pressure Transmitter to Measure Liquid Level

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Differential Pressure Level transmitter for Continuous tank level measurement.

A liquid level measurement solution that prevents the measured medium from directly acting on the transmitter.itle

In the chemical production, the medium often encounters problems such as impurities, crystal particles or agglomeration. It is easy to block the connecting pipeline. At this time, a flange-type differential pressure transmitter is required.

Silicone oil is filled in the closed system composed of the bellows, capillary tube and measuring chamber as the pressure transmission medium. The measured medium does not enter the capillary tube and the transmitter to avoid blockage.

Flange Mounted Differential Pressure Transmitter
Extended Diaphragm Seal DP Level Transmitter
Remote Seal Differential Pressure Transmitter
Differential pressure(DP) level transmitter

Differential Pressure Level transmitters are divided into single flange type and double flange type according to their structure.

Only a flange between the container and the transmitter is called a single flange differential pressure transmitter.

As for the closed container whose upper end is isolated from the atmosphere, the upper space and atmospheric pressure are mostly different. Two flanges must be used to guide the liquid and gas phase pressure to the differential pressure transmitter. This is the double flange differential pressure transmitter.

Read more What is a diaphragm seal?

Differential Pressure Level transmitter for open containers

Open tank level measurement means that the tank is open to the atmosphere. Any change in atmospheric pressure will affect the process fluid pressure in the tank. In this liquid level measurement application, the low pressure side of the transmitter can measure the atmospheric pressure. This eliminates the influence of atmospheric pressure on the tank liquid level. The high-pressure side of the transmitter is connected to the tank. Therefore, the actual liquid level in the tank can be measured.

A single flange is used to measure the liquid level of an open tank.

Differential pressure range calculation method: Need to measure the height of the liquid level (unit: m) × acceleration of gravity (9.8) × measured medium density (unit: g/cm3) differential pressure range (unit: KPa).

The selection must know the measurement medium, measuring range, medium temperature, the size and pressure rating of the process connection flange, and the flange standard.

Image Source: https://www.yokogawa.com/in/library/resources/media-publications/how-to-avoid-temperature-effects-in-differential-pressure-level-measurements/

Extended Reading: Differential Pressure (DP) Flow Meters Technology

Differential Pressure Level transmitter for closed containers

For airtight containers, the inside is isolated from the atmosphere. When the process fluid fills or empties the tank, the pressure in the tank may change from positive pressure to vacuum. This change in tank pressure will directly affect the measured liquid level unless it is compensated for. This can be done by connecting the low-side pipe of the differential pressure transmitter to the top of the tank. Therefore, when measuring the liquid level of a closed tank, a differential pressure transmitter must be used.

Double flanges are used to measure the liquid level of a closed tank.

The calculation method of the differential pressure range: the height of the liquid level to be measured (unit: m) × acceleration of gravity (9.8) × (the density of the measured medium-the density of the capillary filling liquid) (unit: g/cm3) = differential pressure range (unit: KPa).

The selection must know the measurement medium, measuring range, medium temperature, pressure, capillary length, the size and pressure rating of the process connection flange and the flange standard

If you need to measure river water level, open channel level, etc. The Ultrasonic Liquid Level Sensor can be used for non-contact continuous level monitoring.

Read more about: 7 Level Senors for Tank Level Measurement

Differential pressure level transmitter working principle

When using Differential pressure (DP) level transmitter to measure the liquid level as shown in the figure below.
The measured liquid density in the figure is ρ.
The working medium density in the capillary of the double flange differential pressure transmitter is ρ0.
The measuring range of the measured liquid level is H.
The center distance of the sampling tube of the measured liquid level is h.
It can be seen from the figure that the maximum measurement range of the liquid level △ P = P + —P- = H × ρ × g-h × ρ0 × g.

It can be seen from the formula that the dual-flange differential pressure transmitter should perform negative migration. The migration amount S is h × ρ0 × g. And the installation position of the double flange differential pressure transmitter has no effect on the migration amount and the measurement result.

Extended reading: Hydrostatic Level Measurement

The dual-flange differential pressure transmitter requires negative migration.

When the measured liquid level is 0, the pressure difference between the positive and negative measurement chambers of the remote differential pressure transmitter is the largest. The output current of the double flange differential pressure transmitter is 4mA.

As the measured liquid level rises, the pressure difference between the positive and negative measurement chambers of the transmitter gradually decreases.

When the measured liquid level rises to the highest Hmax. The pressure difference between the positive and negative measurement chambers of the transmitter is the smallest. The output current of the double flange differential pressure transmitter is 20mA.

Extended Reading: Procurement Guide for Ultrasonic liquid level sensors

You may like:

Sino-Inst offers overs 100 DP transmitters for liquid level, pressure, flow, temperature measurement. Differential pressure (dp) level transmitters suit to measeure water and other liquid level.

A wide variety of DP level transmitters are available to you. Such as SMT3151LT Differential pressure level transmitter.

You can also choose from liquid flow meter and pressure transmitters, not specified. We are differential pressure level transmitter suppliers, located in China. The top supplying country is China(Mainland), which supply 100% of DP transmiters respectively.

Wafer Flange Vortex Flowmeter

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Vortex flow meter is suitable for measuring steam as well as a variety of liquids and gases. Wafer Flange Vortex Flowmeter is suitable for low pressure pipes. Cost is lower.

Wafer Flange Vortex Flowmeter means that the flowmeter body does not have flanges. The pipeline has flanges. The pipeline is tightened by bolts to clamp the flowmeter hard, so it is called clamping. The flange type Vortex Flowmeter is that the body and the pipeline have flanges. Use A pair of flanges are fixedly installed. Therefore, the pressure and caliber of the Wafer Flange Vortex Flowmeter is not high. However, two flanges are saved, which can be cheaper.

Wafer Flange Vortex Flowmeter reference price:  USD 200-700/pc.

Sino-Inst offers a variety of  Vortex flow meters for flow measurement. If you have any questions, please contact our sales engineers.

Request a Quote
Vortex Flow Meters

Features of Wafer Flange Vortex Flowmeter

  1. Suitable for use in petrochemical and other hazardous situations requiring explosion protection;
  2. Explosion-proof certification mark: Ex ia ⅡC T6 Ga;
    • Explosion-proof vortex flowmeter. It is not allowed to open the circuit shell when the power is on. It is necessary to alternately switch on and off the power supply for repeated adjustments, which is inconvenient and prone to errors and dangers;
    • Intrinsically safe vortex flowmeter. It can be operated at will when the power is on, which is convenient and safe.
  3. It has a very unique medium versatility. It can be used for flow measurement and control of most steam, gas and liquid;
  4. Simple structure, no holes and gaps design, no wear, dirt resistance, no moving parts, low failure rate, high stability and reliability;
  5. Integrated design of temperature and pressure compensation;
  6. The meter body is made of stainless steel, which is suitable for the measurement of corrosive media;
  7. On-site LCD display, pulse, 4-20mA output or 485 communication, can be connected with industrial automation syst

Specifications of Wafer Flange Vortex Flowmeter

Measuring mediumSuperheated/saturated steam, liquid and gas
Measuring rangeSee flow range table for details
caliberWafer type/flange type: DN15~DN400~DN1000
Medium temperature (℃)(-40~80)℃, (-40~150)℃, (-40~300)℃, (-40~400)℃
Environment temperature (℃)(-20~+70)°C atmospheric pressure: 86kPa～106kPa
Nominal pressureLiquid 1.6MPa, 2.0MPa, 2.5MPa, 4.0MPa, 5.0MPa, 6.3MPa, 10.0MPa, 25MPa
Gas and steam 1.6MPa, 2.0MPa, 2.5MPa, 4.0MPa, 5.0MPa
Accuracy±1.0%, ±1.5%
Flow rate range (m/s)Liquid: 0.15~7 Gas: 1.5~60 Steam: 2~70
output signalThree-wire voltage pulse: high level≥5V low level<1V
Standard current signal: (4-20) mA standard current signal proportional to the flow rate, local display flow, cumulative flow.
And output proportional to the flow rate (4-20) mA standard current signal and pulse frequency signal
Communication method: RS-485 communication
Power supplyThree-wire voltage pulse: DC12V, DC24V
Standard current output, local display: DC24V
Battery power supply (lithium battery): 3.6V
Ambient temperature(-20~+70)°C atmospheric pressure: 86kPa~106kPa
Protection levelIP65
Explosion-proof gradeIntrinsically safe Ex ia ⅡC T6 Ga
displayLCD displays instantaneous flow, cumulative flow, vortex frequency,
temperature and pressure (integrated temperature and pressure)
Cable interfaceM20×1.5 (internal thread, recommended);
1/2NPT (internal thread)
Installation formIntegrated installation;
split installation
(the measuring tube and the indicator are connected by a 10-core special shielded cable)

Vortex Flowmeter Installation Method

Vortex flowmeters are divided into different installation forms: flange type, clamp type, plug-in type, thread type and clamp type.

When selecting the vortex flowmeter, the flange type is given priority, followed by the clamping type and the plug-in type.

The reason is that the accuracy of clamp-on and insertion type is greatly affected by the installation, and non-standard installation will produce errors.

The installation methods of vortex flowmeters differ as follows:

  • Flange type: The instrument is connected to the process pipeline through its own flange, with high pressure resistance and large caliber range. high cost.
  • Clamping type: The instrument is clamped and fixed on the process pipeline by the flange on the pipeline, with low pressure resistance and small caliber range. low cost.
  • Plug-in type: suitable for large diameter pipes. Ball valves can be installed. Convenient online installation and disassembly.
  • Threaded type: Threaded installation can only be used for small diameter pipes. Internal thread/external thread installation can be customized.
  • Clamp type: 316 stainless steel clamp accessories. It is suitable for food, medicine and other hygiene industries. Installation is quick and easy.

Vortex Flowmeter Working Principle

Vortex flowmeter is a speed-type flowmeter produced according to karman’s vortex principle,
which can be used for the measurement and measurement of conventional gas, steam and
liquid.

Vortex flow sensor has high precision and wide range ratio, no moving parts in use, which can
improve mechanical stability and reduce maintenance.Vortex flowmeter is almost not affected by the temperature, pressure and composition of medium when measuring the volume of working condition.

Therefore, it is convenient to calibrate the instrument, so vortex street flow sensor is widely used in production and life.

When a trigonal column vortex generator is set in the fluid, regular vortices are generated alternately on both sides of the vortex generator, which is called Carmen vortex.

The vortex columns are arranged asymmetrically downstream of the vortex generator. Vortex flowmeter is produced according to this principle.

Vortexes are generated by generating bodies and the number of vortexes is detected by high-sensitivity sensors. In a certain range, the number of vortexes generated is proportional to the flow rate.

In vortex flowmeter, the relationship between flow rate and the number of vortexes generated
can be expressed by the following formula：

Q：Operating volume flow of the measured medium. The unit is m3/h。
F：Frequency of the number of vortices produced by the generating body. The unit is Hz.
K：Refers to the calculated or calibrated flow coefficient. It represents how many frequency signals per cube. the coefficient is usually obtained by calibration.

The formula of standard table method calibration coefficient K:

The formula can also be used for flow correction.

Read more about: Vortex Shedding Flow Meter Working Principle

Vortex flowmeter advantages and disadvantages

Advantages of vortex flowmeter

  • The vortex flowmeter has no moving parts, and the measuring element has a simple structure, reliable performance and long service life.
  • The vortex flowmeter has a wide measuring range. The turndown ratio can generally reach 1:10.
  • The volume flow of the vortex flowmeter is not affected by thermal parameters such as the temperature, pressure, density or viscosity of the fluid being measured. Generally, no separate calibration is required. It can measure the flow of liquid, gas or steam.
  • The pressure loss caused by it is small.
  • The accuracy is high, the repeatability is 0.5%, and the maintenance is small.

Disadvantages of vortex flowmeter

  • The volume flow of the vortex flowmeter is not affected by the temperature, pressure, density and other thermal parameters of the measured fluid. But the final measurement result of liquid or steam should be the mass flow rate, and for gas, the final measurement result should be the standard volume flow rate. Both mass flow and standard volume flow must be converted by fluid density, and changes in fluid density caused by changes in fluid working conditions must be considered.
  • The factors that cause errors are: errors caused by uneven pipeline flow rates; inability to accurately determine the density of the medium when fluid conditions change; and the wet saturated steam is assumed to be dry saturated steam for measurement. If these errors are not limited or eliminated, the total measurement error of the vortex flowmeter will be very large.
  • Poor vibration resistance. External vibration will cause errors of the vortex flowmeter, or even fail to work normally. The high-velocity impact of the channel fluid will cause additional vibrations to the cantilever of the vortex generator, which reduces the measurement accuracy. The influence of large pipe diameter is more obvious.
  • Poor adaptability to measuring dirty media. The generating body of the vortex flowmeter is very easy to be dirty by the medium or entangled by the dirt, and the change of the geometric body size will greatly affect the measurement accuracy.
  • High requirements for straight pipe sections. Experts pointed out that the straight pipe section of the vortex flowmeter must ensure the front 40D and the 20D to meet the measurement requirements.
  • Poor temperature resistance. Generally, vortex flowmeters can only measure the fluid flow of media below 300°C.

More Featured Vortex Flowmeters

Vortex Shedding Flow Meter
Voretx Sanitary Flow Meter
Insertion Vortex Flow Meter
Threaded Vortex Gas Flow Meter

Sino-Instt offer over 10 Voretx FlowMeters, with Best Price.

A wide variety of Voretx Flow Meters options are available to you, such as free samples, paid samples. All of our flow meters can wokrk with the AMS NEW TREX.

Sino-Inst is Voretx Flow Meter suppliers, located in China. Vortex shedding flow meter products are most popular in North America, Mid East, and Eastern Europe.

Vortex Hygienic Flow Meter

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Hygienic Flow Meter uses stainless steel tri-clamp fittings. Meet the hygiene measurement requirements of food-processing and bio-technology/ pharmaceutical industries.

Hygienic and clean flow metering instruments for measuring the movement of substances in food, beverage and pharmaceutical processes. Hygienic measuring instruments are designed for the food, beverage and pharmaceutical industries, which require a high degree of cleanliness during manufacturing. The Vortex Hygienic Flow Meter is a flowmeter that can be used to measure instantaneous and cumulative flow of liquids, gases and steam.

Vortex Hygienic Flow Meter reference price:  USD 300-700/pc.

Sino-Inst offers a variety of  Vortex flow meters for flow measurement. If you have any questions, please contact our sales engineers.

Request a Quote
Vortex Flow Meters

Features of Vortex Hygienic Flow Meter

  1. Dedicated to the sanitary industry, simple internal components, clamp connection;
  2. Software configuration can realize various configurations required for different measurements of different media;
  3. Parameter setting can set the measurement parameters of different fluids. Example: gas deviation coefficient, instrument coefficient, rated value, etc.;
  4. Self-diagnosis diagnoses the setting parameter range, generator output signal, signal sending and receiving, CPU failure, etc.;
  5. Display function Various parameters such as diagnostic code, flow, total, flow percentage, etc.;
  6. On-site LCD display, pulse, 4-20mA output or 485 communication, can be connected with industrial automation system.
  7. Integrated design of temperature and pressure compensation;

Specifications of Vortex Hygienic Flow Meter

Measuring mediumGas, liquid, vapor
Caliber specificationDN15-300
Flow measurement rangeNormal flow rate range of the measuring child: gas 5~50m/s; liquid 0. 5~7m/s
measurement accuracy1.0 level 1.5 level
Measured medium temperatureRoom temperature -25℃～10℃ High temperature -25℃～150℃ -25℃～250℃
MaterialStainless steel 304 stainless steel
power supplyDC24V or lithium battery 3.6V
Explosion-proof gradeIntrinsically safe type iaIIbT3-T6
Protection levelIP65

Extended reading: What Is Difference Between Rotameter And Flow Meter?

Sanitary Flow Meters

Common sanitary flow meters are sanitary magnetic flow meters and sanitary turbine flow meters. Composed of 304/316 stainless steel. A Sanitary flowmeter with Tri-Clamp fittings is easier to install and disassemble. Suitable for the food hygiene industry.

Magnetic Sanitary Flow Meter

Sanitary Flow Meter uses a new type of sanitary lining material and lining technology, which meets the sanitary requirements of the food industry. It uses a stainless steel shell and stainless steel clamp connection. It is convenient for the quick disassembly and cleaning of the electromagnetic flow meter. Magnetic flow meter in a sanitary version which meets the strict requirements of the food-processing and bio-technology/ pharmaceutical industries.

Extended reading: Stainless steel flow meters|304-316 optional

The hygienic mass flowmeter is mainly used to measure the mass flow, total amount and density of the medium. At the same time, it can also measure the volume flow and total amount, medium temperature, moisture content, alcohol content of alcohol. Two liquids that are mixed evenly The concentration of raw materials in the process flow, etc.

Turbine Sanitary flow meter

Sanitary Flow Meter, also called sanitary turbine flow meter or Hygienic turbine flowmeter. Ensure Accurate Flow Measurement in Sanitary food-processing and bio-technology industries.

Sanitary turbine flow meters have stainless steel bodies and come standard with Tri-Clover fittings. A Sanitary flow meter is suitable for measuring liquid without impurities. It can output pulse frequency signal. It is used to detect instantaneous flow and total integrated flow. Sanitary flow meter can be used in food, sport drink, liquor and other beverage industries, in preprocess applications.

Read more about Sanitary Flow Meters-316SS,Tri clamp-Pulse- for Brewery

Sanitary metal rotor flowmeters are mainly used in food, beverage, pharmaceutical and other industries. In the production process, it mainly plays the role of metering, ingredient control, and finished product filling. The material needs to be corrosion-resistant to prevent contamination of the product. The structure should not be too complicated and should be simpler. To prevent residual material inside the flowmeter, it is inconvenient to clean. These conditions are met to meet the usage requirements.

For example, a peanut oil processing company needs to use a flowmeter to measure the volume weight of the primary processed oil and the final refined oil, as well as the quantitative control in the filling process.

Extended reading: Featured Hydraulic Flow Meters For Sale

Read more about: Application of sanitary flow meters

Vortex flow meter advantages and disadvantages

Advantages of vortex flowmeter

  • The vortex flowmeter has no moving parts, and the measuring element has a simple structure, reliable performance and long service life.
  • The vortex flowmeter has a wide measuring range. The turndown ratio can generally reach 1:10.
  • The volume flow of the vortex flowmeter is not affected by thermal parameters such as the temperature, pressure, density or viscosity of the fluid being measured. Generally, no separate calibration is required. It can measure the flow of liquid, gas or steam.
  • The pressure loss caused by it is small.
  • The accuracy is high, the repeatability is 0.5%, and the maintenance is small.

Extended reading: non contact flow meter

Disadvantages of vortex flowmeter

  • The volume flow of the vortex flowmeter is not affected by the temperature, pressure, density and other thermal parameters of the measured fluid. But the final measurement result of liquid or steam should be the mass flow rate, and for gas, the final measurement result should be the standard volume flow rate. Both mass flow and standard volume flow must be converted by fluid density, and changes in fluid density caused by changes in fluid working conditions must be considered.
  • The main factors that cause flow measurement errors are: measurement errors caused by uneven pipeline flow rates; inability to accurately determine the density of the medium when fluid conditions change; and the wet saturated steam is assumed to be dry saturated steam for measurement. If these errors are not limited or eliminated, the total measurement error of the vortex flowmeter will be very large.
  • Poor vibration resistance. External vibration will cause measurement errors of the vortex flowmeter, or even fail to work normally. The high-velocity impact of the channel fluid will cause additional vibrations to the cantilever of the vortex generator, which reduces the measurement accuracy. The influence of large pipe diameter is more obvious.
  • Poor adaptability to measuring dirty media. The generating body of the vortex flowmeter is very easy to be dirty by the medium or entangled by the dirt, and the change of the geometric body size will greatly affect the measurement accuracy.
  • High requirements for straight pipe sections. Experts pointed out that the straight pipe section of the vortex flowmeter must ensure the front 40D and the 20D to meet the measurement requirements.
  • Poor temperature resistance. Generally, vortex flowmeters can only measure the fluid flow of media below 300°C.

Extended reading: Food grade flow meters for Food & Beverage industry

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Sino-Instt offers over 10 Vortex Hygienic Flow Meters, with the Best Price.

A wide variety of Vortex Hygienic Flow Meters options are available to you, such as free samples, paid samples. All of our flow meters can work with the AMS NEW TREX.

Sino-Inst is a Vortex Hygienic Flow Meter supplier, located in China. Vortex shedding flow meter products are most popular in North America, Mid East, and Eastern Europe.

Vortex Split High Temperature Flow Meter

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High Temperature Flow Meter is suitable for high temperature flow monitoring. Suitable for high temperature, high pressure, safety and explosion-proof.

The High Temperature Flow Meter uses a split signal converter. The way the vortex body is separated from the vortex converter. The Vortex Split High Temperature Flow Meter is suitable for high temperature, high pressure, safety and explosion-proof applications, where you need to watch the meter data on site. It is widely used in the measurement of steam, gas and liquid. And inconvenience Under complex conditions of reading data.

Vortex Split High Temperature Flow Meter reference price: USD 500-1500/pc.

Sino-Inst offers a variety of  Vortex flow meters for flow measurement. If you have any questions, please contact our sales engineers.

Request a Quote
Vortex Flow Meters

Features of Vortex Split High Temperature Flow Meter

  1. Not affected by temperature and pressure. At the same time, it is not easy to block and scale. It is resistant to high temperature and high pressure, and is suitable for harsh environments.
  2. The product has no wear, dirt resistance, no mechanical maintenance, and long service life.
  3. The current output is electrically isolated, with good common mode interference suppression.
  4. It can accurately measure the flow of gas, liquid and steam in a wide flow range without being affected by the physical properties of the fluid.
  5. Simultaneous display of flow value and accumulated flow value, no need to switch in turn.
  6. Adopt anti-vibration probe to effectively eliminate the influence of external vibration.
  7. Using split signal converter, the cable length is 10 meters.
  8. The circuit adopts surface mount technology, compact structure and high reliability.

Specifications of Vortex Split High Temperature Flow Meter

Measuring mediumSuperheated/saturated steam, liquid and gas
Measuring rangeSee flow range table for details
caliberWafer type/flange type: DN15~DN400
Medium temperature (℃)(-40~80)℃, (-40~150)℃, (-40~300)℃, (-40~400)℃
Environment temperature (℃)(-20~+70)°C atmospheric pressure: 86kPa～106kPa
Nominal pressureLiquid 1.6MPa, 2.0MPa, 2.5MPa, 4.0MPa, 5.0MPa, 6.3MPa, 10.0MPa, 25MPa
Gas and steam 1.6MPa, 2.0MPa, 2.5MPa, 4.0MPa, 5.0MPa
Accuracy±1.0%, ±1.5%
Flow rate range (m/s)Liquid: 0.15~7 Gas: 1.5~60 Steam: 2~70
output signalThree-wire voltage pulse: high level≥5V low level<1V
Standard current signal: (4-20) mA standard current signal proportional to the flow rate, local display flow, cumulative flow.
And output proportional to the flow rate (4-20) mA standard current signal and pulse frequency signal
Communication method: RS-485 communication
Power supplyThree-wire voltage pulse: DC12V, DC24V
Standard current output, local display: DC24V
Battery power supply (lithium battery): 3.6V
Ambient temperature(-20~+70)°C atmospheric pressure: 86kPa~106kPa
Protection levelIP65
Explosion-proof gradeIntrinsically safe Ex ia ⅡC T6 Ga
displayLCD display instantaneous flow, cumulative flow, vortex frequency, temperature and pressure (integrated temperature and pressure)
Cable interfaceM20×1.5 (internal thread, recommended); 1/2NPT (internal thread)
Installation formIntegrated installation; split installation (the measuring tube and the indicator are connected by a 10-core special shielded cable)

Extended reading: Vortex Hygienic Flow Meter

Vortex Split High Temperature Flow Meter Applications

The split display type vortex flowmeter (external power supply, internal battery power supply) can measure almost all conductive, non-conductive, sound-conducting, non-sound-conducting, low-temperature, high-temperature, and viscous media, such as liquid, gas, and steam.

Split display type vortex flowmeter (external power supply, internal battery power supply) is widely used in schools, research institutes, food plants, chemical plants, petroleum, metallurgy, coal mines, pharmaceutical plants, hotels, restaurants, power plants, steel plants, etc. Large and small enterprises in various industries.

The split display type vortex flowmeter is an ideal product for obtaining data from scientific research experiments, real-time measurement of equipment consumption, factory performance evaluation, energy saving and emission reduction, and trade settlement between A and B.

Read more about: Vortex Shedding Flow Meter Working Principle

More Featured High Temperature Flow Meters

Here we simply list the temperature of the following different types of high temperature flow meters:

Please note: high temperature flow sensor is customized ,not standard type. If you need to measure high temperature, please contact Sino-Inst sales engineer.

High temperature mass flow meter

Thermal mass flow meter

The thermal gas mass flow meter is designed based on the principle of thermal diffusion, which uses the constant temperature difference method to accurately measure the gas. The sensor part consists of two reference grade platinum resistance temperature sensors. Thermal gases are widely used in factory compressed air, blast furnace gas measurement in ironworks, and monitoring and measurement of chimney flue exhaust.

High temperature ultrasonic flow meter

Clamp-on Ultrasonic Flow Meter

The clamp-on ultrasonic flowmeter composed of wall-mounted host and clamp-on flow sensor can be widely used in various water treatment industries. Applied to online measurement of various liquid volume flow. The main unit and the sensor are installed separately: the sensor is installed on the pipeline, the wall-mounted main unit is installed indoors or in the instrument box, and the main unit and the sensor are connected with an ultrasonic special cable. It is currently the most widely used ultrasonic flowmeter.

High temperature water flow meter

Magnetic Water Flow Meter

Magnetic Water Flow Meter provide highly accurate flow measurement for a wide variety of conductive fluid applications. Magnetic Water Flow Meter is a volumetric flow meter that measures liquids or liquid slurries that have a minimum conductivity of 5 µS/cm. Based on Faraday’s law of electromagnetic induction. Magnetic Water Flow Meter is ideal for wastewater applications or any dirty liquid which is conductive or water based. It is widely used in water treatment, environmental protection sewage measurement and control, papermaking and other industrial and agricultural production processes for flow measurement and control.

High temperature turbine flow meter

Liquid Turbine Flow Meter

Liquid turbine flow meter is the main type of impeller type flow (velocity) meter. It is composed of sensors and conversion display. The sensor uses a multi-blade rotor to sense the average flow rate of the fluid, thereby deriving the flow or total amount. Liquid turbine flow meter is suitable for measuring liquids that are not corrosive to stainless steel 1Cr18Ni9Ti, 2Cr13 and corundum Al2O3 in closed pipelines and are free of impurities. For milk, soybean oil, edible oil, diesel, purified water.

Sino-Instt offer over 10 High Temperature Flow Meters, with Best Price.

A wide variety of High Temperature Flow Meters options are available to you, such as free samples, paid samples. All of our flow meters can wokrk with the AMS NEW TREX.

Sino-Inst is High Temperature Flow Meter suppliers, located in China. High Temperature Flow Meter products are most popular in North America, Mid East, and Eastern Europe.

Threaded Vortex Nitrogen Gas Flow Meter

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Nitrogen gas flow meter is used to measure the flow rate of N2 gas. Digital vortex flowmeter can be flange-Wafer-threaded installation. Threaded is suitable for small diameter pipes.

Nitrogen gas flow meter is easy to use, reasonably priced. Threaded connection is a widely used detachable fixed connection. It has the advantages of simple structure, reliable connection, and convenient assembly and disassembly. Nitrogen is required in many processes of the chemical and pharmaceutical industry. Predominantly as protective gas, to prevent the occurrence of explosive atmospheres. Sino-Inst vortex flowmeter can be used for natural gas, nitrogen, biogas and other gases.

Vortex Nitrogen Gas Flow Meter reference price: USD 400-1000/pc.

Sino-Inst offers a variety of  Vortex flow meters for flow measurement. If you have any questions, please contact our sales engineers.

Request a Quote
Vortex Flow Meters

Features of Vortex Nitrogen Gas Flow Meter

  • The nitrogen flow can be controlled more precisely to save costs.
  • The nitrogen flow control can also prevent the nitrogen flow from being too large, resulting in insufficient heat supplementation.
  • The amount of nitrogen output can be accurately known.
  • The nitrogen flow meter has no movable parts, no wear, and dirt resistance. No mechanical maintenance is required, and the service life is long;
  • The overall structure design of the instrument is reasonable, the dynamic measurement range is wide, and the pressure loss is small;
  • The measurement is not affected by temperature and pressure, and is resistant to high temperatures & High pressure.

Specifications of Vortex Nitrogen Gas Flow Meter

Executive
standard		《JB/T9249-2015 Vortex flow meter industry standard》
Diameter(mm)15,20,25,40,50,65,80,100,125,150,200,250,300,(300~1000 plug-in)
Nominal pressure(MPa)DN15-DN200 4.0(>4.0,Supply agreement)DN250-DN300 1.6(>1.6,Supply agreement)
Medium temperature(ºC)Piezoelectric type :-40~150,-40~260,-40~330;
Projected Capacitive:-40~400(upply agreement)
Body material 1Cr18Ni9Ti(Other material order by agreement)
Permissible vibration
acceleration		Piezoelectric type :0.2g   Projected Capacitive:1.0-2.0g
Accuracy±1%R,±1.5%R;plug-in:±2.5%R
Range of degrees1:6~1:25
Power SupplySensor:DC+12V,DC+24V;Transmitter:DC+12V,DV+24V;Battery-powered:3.6V battery
Output signalPulse:high level:≥5V low level:≤1V;electricity current:4~20mA
Pressure loss coefficientComply with JB/T9249 standard Cd≤2.4
Explosion-proof coefficientIntrinsic safety :Ex ia II CT2-T4 Explosion-proof type:Exd II CT2-T5
Level of protection Ordinary type:IP65  Diving type:IP68
Environmental conditionsTempersature:-20ºC~55ºC,relative humidity 5%~90%,atmospheric pressure:86~106kPa
Applicable mediumgas ,liquid,steam
Transmission distance Three-wire pulse output:≤300m,Two-wire standard current output:(4~20mA)≤1500m
load resistance≤500Ω;RS485/HART≤1200m.
Counduit entryThread M20*1.5 or other

You may like: Digital Flow Meters Guide| Liquid and Gas

What is the difference between Wafer type and screw type connection vortex flowmeter?

Three connection methods: Wafer, thread, flange, etc.:

The flange connection can be selected according to the process requirements, according to different joint surfaces, pressure levels, etc.

Wafer type can be used for various pipe diameters, but the pressure level is not too high.

The application of threaded connection is relatively small, such as small diameter, medium and low pressure, etc.

Read more about: Liquid Flow Meters Guide

Nitrogen Gas Flowmeters-Liquid Nitrogen Flowmeters

5 matters to pay attention to when choosing threaded Vortex Nitrogen Gas Flow Meter

The principle of the vortex flowmeter is to install a stagnant part in the flowmeter pipe. When the fluid flows through the stagnant part. Due to the stagnant effect on the surface of the stagnant part, there will be two asymmetric rows downstream.

These vortices are separated on the side and rear of the stagnant member to form a so-called Karman vortex train. The rotation directions of the two vortices are opposite. Karman theoretically proved that when h/L=0.281, the vortex train is stable. h is the width between two vortex rows, and L is the distance between two adjacent vortices

Correct selection can ensure the better use of threaded connection vortex flowmeter.
What kind of vortex flowmeter should be selected according to the physical and chemical properties of the fluid medium to be measured?

  1. Precise function inspection

Accuracy grade and function Choose the instrument accuracy grade according to the measurement requirements and use occasions, so as to be economical and cost-effective.
For example, it is used for trade settlement, product handover and energy metering occasions. The accuracy level should be higher, such as 1.0, 0.5, or higher.

For process control occasions, different accuracy levels can be selected according to control requirements.

For some occasions that just check the process flow and do not need to do precise control and measurement, you can choose a slightly lower accuracy level, such as 1.5, 2.5, or even 4.0. In this case, you can choose a cheap plug-in vortex flowmeter.

2. Measurable medium

When measuring general media, the full-scale flow of the vortex flowmeter can be selected within the range of 0.5-12m/s of the measured medium flow rate, and the range is relatively wide.
The selected instrument specification (caliber) is not necessarily the same as that of the process pipeline. It should be determined whether the measurement flow range is within the flow rate range. That is, when the flow rate of the pipeline is low and cannot meet the requirements of the flow meter or when the measurement accuracy cannot be guaranteed at this flow rate. It is necessary to reduce the caliber of the instrument to increase the flow velocity in the pipe and obtain satisfactory measurement results.

3. Selection of screw connection vortex flowmeter transmitter

In the saturated steam measurement, the VA piezoelectric vortex flow transmitter is used. Because the vortex flowmeter has a wide range. Therefore, in practical applications, it is generally considered that the flow rate of the saturated steam should not be lower than that of the vortex flowmeter. Lower limit. That is to say, the fluid velocity must not be lower than 5m/s.

Vortex flow transmitters of different calibers can be selected according to the amount of steam used. The caliber of the transmitter cannot be selected by the caliber of the existing process pipeline.

4. Selection of pressure compensation pressure transmitter

Because the saturated steam pipeline is long, the pressure fluctuates greatly. Pressure compensation must be used. Considering the corresponding relationship between pressure, temperature and density, only pressure compensation can be used in the measurement. Because the pipeline saturated steam pressure is in the range of 0.3-0.7MPa. Pressure The range of the transmitter can be 1MPa.

5. Selection of display instrument for screw connection vortex flowmeter

Intelligent flow indicator, with functions of voltage stabilization compensation, instantaneous flow display and cumulative flow accumulation.

Further reading: Nitrogen(N2) Flow Meter Types

Digital Nitrogen Gas Flow Meters

Currently, on the market, there are four main instruments that can measure nitrogen flow:

Thermal mass flowmeter

Thermal gas mass flow meter. For direct mass measurement of industrial gases, compressed air, and aqueous fluids. Including nitrogen.

Coriolis mass flow meter

Coriolis mass flowmeter. Directly measure the mass flow of gas and liquid. It can be used to measure nitrogen, which is more expensive.

Vortex Steam Flow Meter

Vortex flowmeter. Directly measure the volume flow of gas and liquid. It is necessary to add temperature and pressure measuring sensors and totalizers to calculate mass flow.

Orifice flow meter

Orifice flowmeter. The orifice is used as a throttling element. With a differential pressure transmitter, the volume flow can be calculated. To convert into mass flow, temperature and pressure sensors and totalizers must also be added.

Gas Thermal Mass Flow Meter
 Annubar Flow Meter
Integral DP Flow Meter
Precession Vortex Gas Flowmeter
Vortex Shedding Flow Meter
Gear flow meter for Micro flow

Extended reading: liquid nitrogen level measurement

Nitrogen Gas Flow Measurement

Nitrogen is required in many processes of the chemical and pharmaceutical industry; predominantly as protective gas, to prevent the occurrence of explosive atmospheres。

Such as when handling dusty products or solvents.

If your work requires you to use nitrogen, having a flow meter installed on your tank is a great way to save some money.

These indicators let you know whether gas is moving through the line, often via the use of a levitating ball, a pressure gauge, or other visual cues.

These options are simple to use and reliable, making them must-haves for welders, HVAC technicians, and more.

There are many types of Nitrogen gas flow meters. There are three types of flow meters commonly used to measure nitrogen. Precession vortex flowmeter, gas vortex flowmeter, thermal gas mass flowmeter. When selecting a model, it is necessary to select a suitable model and specification according to the parameters and cost that can be provided on-site.

Read more about:
Benefits Of Digital Gas Mass Flow Meters

Frequently
Asked
Questions

Help Center

Nitrogen Flowmeters are a type of flow meter that can measure the flow of nitrogen or liquid nitrogen. The common nitrogen flow rates are nitrogen and liquefied nitrogen. Nitrogen is often referred to as an inert gas. Used in metal processing in some inert atmospheres. When it is liquid, it is a common reagent for cooling, cooling, and freezing. Optimize your nitrogen system and save costs. Therefore, it is very important to accurately measure the nitrogen flow rate.

A gas flow meter is an instrument that measures the flow of gas. Installed in the pipeline to record the amount of gas flowing through. Can measure gas, air, nitrogen, acetylene, phosgene, hydrogen, natural gas, nitrogen, LPG, hydrogen peroxide, flue gas, methane, butane, chlorine, gas, biogas, carbon dioxide, oxygen, compressed air, argon Gas, toluene, benzene, xylene, hydrogen sulfide, sulfur dioxide, ammonia, etc.

There are many types of gas flow meters. Such as vortex flowmeter, precession vortex flowmeter, orifice flowmeter, thermal mass flowmeter, rotor flowmeter, etc. For the working principle of the specific gas flow meter, you need to query the specific flow category.

During actual measurements. Because nitrogen has similar properties to air. So the air flow meter can measure nitrogen.

However, in theory, it is not universal.
Because the measured medium is different: one is nitrogen and the other is air. The flow meter coefficients are different. Best to check with the flow meter supplier.

The price of different flowmeters varies a lot. The exact flow meter price needs to be calculated based on the measurement parameters.

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Sino-Instt offer over 10 Threaded Vortex Nitrogen Gas Flow Meters, with Best Price.

A wide variety of Threaded Vortex Nitrogen Gas Flow Meters options are available to you, such as free samples, paid samples. All of our fNitrogen Gas Flow Meters can wokrk with the AMS NEW TREX.

Sino-Inst is Threaded Vortex Nitrogen Gas Flow Meter suppliers, located in China. Nitrogen Gas Flow Meter products are most popular in North America, Mid East, and Eastern Europe.